Although generally in children in Ghana are treasured within society, with parents and the wider family doing all they can to ensure the child grows up happily, child trafficking still exists with many taken from their home villages to work in the fishing industry. In the 1960s the hydroelectrci Akosombo Dam was built creating one of the world's largest artificial lakes in the Volta River Basin, Lake Volta, however overfishing has led to a depeltion of stocks and cheap labour is required by the fishermen not only to keep their costs down but because the fingers of young children are best placed to release the fish from the ever decreasing size of the nets. Such practices are widespread in Ghana because many traditional families believe learning how to fish is more important for children than a wasted education. Others, as they grow up, will engage in the agriculture sector (increasingly harsh in the dry savannah north of the country, where poor rainfalls are leading to frequent poor harvests) and, to a much lesser extent industry, including mining, lumbering, light manufacturing, aluminum smelting, food processing, cement, small commercial ship building and the growing petroleum sector. As in many other developing nations, there is also a burgeoning services sector; however, this has gone hand in hand with a large wealth disparity with the wealthiest 10% of Ghanaians now sharing 32% of the country's total consumption with the very poorest 10% of the population consuming only 2%.